The genuine line alignment with an industrial red line laser is always different from any other manual or mechanical measuring tools. It is projecting highly visible red laser beam from 650nm or 635nm red laser diodes. After the employment of qualified optic lens with selected optic lens degree, this line laser module is always generating modifying laser light in type of a highly straight red reference line from laser beam aperture. On basis of quite easy installation and adjustment of laser line thickness and line targeting direction, it ensures high level of accuracy line projection on various working surfaces.